pg_basebackup and checkpoints

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От Alan Nilsson
Тема pg_basebackup and checkpoints
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Msg-id 5BEE067A-6EEA-4256-A4B0-42D56BA76999@apple.com
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Ответы Re: pg_basebackup and checkpoints  (Magnus Hagander <magnus@hagander.net>)
Список pgsql-general
I tried (and finally succeeded) to do a base backup tonight using pg_basebackup.  I was backing up a server that had no
activityon it.  The backup connected but no data was transferring, both ends sitting idle.   It finally occurred to me
totry a manual checkpoint and it then the backup took off and completed. 

According to 24.3 in the docs, pg_start_backup() performs a checkpoint.  So I was surpassed that using the pg_baseback
utilityI had to manual kick a checkpoint before the transfer would start.   

Is this correct behavior?

alan

fwiw, invocation:
pg_basebackup -P --xlog —host=XXXXX --pgdata=pgsql --user=replicate

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